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How to ignore laptop's LCD display?

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Fred J. Tydeman

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Sep 11, 2011, 5:01:55 PM9/11/11
to
I have an old IBM Thinkpad A31p laptop with ATI
Mobility Radeon 7500 graphics chip with 64 meg
display ram. The 1600x1200 LCD display has died.
I have hooked up an external monitor (1920x1080).
I have been able to reconfigure Windows XP and
Fedora Core Linux to ignore the dead LCD and use
the external monitor at 1920x1080 (which is sharp)
But, with eCS 1.2R, I cannot figure out how to
do the equivalent.

Using: System Setup: Screen

I have tried 1600x1200 on the 1920x1080 which ends
up with a fuzzy display.

I have tried 1920x1080, but the real screen only
shows a subset (perhaps 1280x960) of the image
(which can be panned) to get to any part of the
full image.

I believe that I am using Snap graphics driver.

I understand that there is a choice of graphics
drivers for eCS. Which one should I be using
and how to I configure it?
---
Fred J. Tydeman Tydeman Consulting
tyd...@tybor.com Testing, numerics, programming
+1 (775) 358-9748 Vice-chair of PL22.11 (ANSI "C")
Sample C99+FPCE tests: http://www.tybor.com
Savers sleep well, investors eat well, spenders work forever.

Alex Taylor

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Sep 17, 2011, 5:55:01 AM9/17/11
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On Sun, 11 Sep 2011 21:01:55 UTC, "Fred J. Tydeman"
<tydeman.c...@sbcglobal.net> wrote:

> I have an old IBM Thinkpad A31p laptop with ATI
> Mobility Radeon 7500 graphics chip with 64 meg
> display ram. The 1600x1200 LCD display has died.
> I have hooked up an external monitor (1920x1080).
> I have been able to reconfigure Windows XP and
> Fedora Core Linux to ignore the dead LCD and use
> the external monitor at 1920x1080 (which is sharp)
> But, with eCS 1.2R, I cannot figure out how to
> do the equivalent.
>
> Using: System Setup: Screen
>
> I have tried 1600x1200 on the 1920x1080 which ends
> up with a fuzzy display.
>
> I have tried 1920x1080, but the real screen only
> shows a subset (perhaps 1280x960) of the image
> (which can be panned) to get to any part of the
> full image.

It's not clear what you want to do. Are you not able to get eCS to
output video on the external monitor? What do you mean by "ignoring"
the LCD?

--
Alex Taylor
Fukushima, Japan
http://www.socis.ca/~ataylo00

Please take off hat when replying.

Fred J. Tydeman

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Sep 17, 2011, 10:25:01 AM9/17/11
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On Sat, 17 Sep 2011 09:55:01 UTC, "Alex Taylor" <mai...@reply.to.address> wrote:

> It's not clear what you want to do. Are you not able to get eCS to
> output video on the external monitor? What do you mean by "ignoring"
> the LCD?

I want a sharp 1920x1080 image on the 1920x1080 external display.

I can get a fuzzy 1600x1200 image on the 1920x1080 external display.
Same for 1280x960 and 1024x768.

The laptop's 1600x1200 LCD is dead, but eCS thinks it is still working,
so only does 4x3 ratios, while I now want 16x9 ratios.

Under eCS 2.0, I have tried SNAP, Panoroma, and GRADD, and none
of them will do what I want.

I know that the hardware can do what I want, as both Windows XP and Linux
do it.

Dave Yeo

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Sep 17, 2011, 12:26:21 PM9/17/11
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Fred J. Tydeman wrote:
> On Sat, 17 Sep 2011 09:55:01 UTC, "Alex Taylor"<mai...@reply.to.address> wrote:
>
>> It's not clear what you want to do. Are you not able to get eCS to
>> output video on the external monitor? What do you mean by "ignoring"
>> the LCD?
>
> I want a sharp 1920x1080 image on the 1920x1080 external display.
>
> I can get a fuzzy 1600x1200 image on the 1920x1080 external display.
> Same for 1280x960 and 1024x768.
>
> The laptop's 1600x1200 LCD is dead, but eCS thinks it is still working,
> so only does 4x3 ratios, while I now want 16x9 ratios.
>
> Under eCS 2.0, I have tried SNAP, Panoroma, and GRADD, and none
> of them will do what I want.
>
> I know that the hardware can do what I want, as both Windows XP and Linux
> do it.

You probably have to add 1920x1080 to snap with x:\snap\gamode.exe,
something like gamode.exe add 1920 1080 32, perhaps with the [device]
also as a parameter, you'll need to figure out the device name from the
settings window or one of the other command line programs.
Running the individual programs with no parameters will give you help
which if needed you can pipe through more, gamode | more
Dave

Fred J. Tydeman

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Sep 17, 2011, 2:45:59 PM9/17/11
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On Sat, 17 Sep 2011 16:26:21 UTC, Dave Yeo <dave....@gmail.com> wrote:

> You probably have to add 1920x1080 to snap with x:\snap\gamode.exe,
> something like gamode.exe add 1920 1080 32, perhaps with the [device]
> also as a parameter, you'll need to figure out the device name from the
> settings window or one of the other command line programs.
> Running the individual programs with no parameters will give you help
> which if needed you can pipe through more, gamode | more

I did that. I then selected it and rebooted.

The real screen only shows a subset (perhaps 1280x960) of the image
(which can be panned) to get to any part of the full image.

Steve Wendt

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Sep 17, 2011, 2:51:17 PM9/17/11
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On 09/17/11 11:45 am, Fred J. Tydeman wrote:

> The real screen only shows a subset (perhaps 1280x960) of the image
> (which can be panned) to get to any part of the full image.

After boot, have you toggled the output (Fn-F7, I believe) so that only
the external monitor is selected as output? There are three modes: a)
LCD only, b) LCD+VGA, c) VGA only

You could also load GACtrl, and try turning off LCD output there. It
may not stick between reboots though, depending on what the BIOS does.

James J. Weinkam

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Sep 17, 2011, 5:03:37 PM9/17/11
to
I don't know if this is relevant to the OP, but on my T60 Fn-F7 doesn't work if ACPI.PSD (which I
need for SMP) is loaded. For some reason it captures the Fn-xx key strokes. If the developers could
be persuaded to let them through Fn-F7 would probably work since it works if I rem out the ACPI
related lines.

The work around on the T60 is to boot to another system, use Fn-F7 to get the display system in the
desired state and then reboot eCS without powering down. Maybe the OP's laptop will behave the same way.

Rich Wonneberger

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Sep 17, 2011, 8:02:16 PM9/17/11
to
Fred,

If you power up the laptop with the top closed doesn't it use the
external display?
Do you have a docking bay? Same idea.
If the power button is not external, power it up then shut the top?

Rich W.

Steve Wendt

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Sep 17, 2011, 9:13:11 PM9/17/11
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On 09/17/11 02:03 pm, James J. Weinkam wrote:

> The work around on the T60 is to boot to another system, use Fn-F7 to
> get the display system in the desired state and then reboot eCS without
> powering down.

It should work before the OS is booted as well, although it's not
necessarily easy to tell the difference between LCD+CRT and CRT only
when the LCD doesn't work.

Fred J. Tydeman

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Sep 18, 2011, 12:54:45 PM9/18/11
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On Sun, 18 Sep 2011 00:02:16 UTC, Rich Wonneberger <Tur...@frontiernet.net> wrote:

> If you power up the laptop with the top closed doesn't it use the
> external display?
> Do you have a docking bay? Same idea.
> If the power button is not external, power it up then shut the top?

Using a docking bay and the lid closed, after eCS boots, the external
monitor is black (which is different than no signal - which my monitor
tells me about). When I open the lid, I get a display on the monitor.
When I close the lid, the monitor goes black.

When I do get a display, it is a subset of full screen (which can be panned).

Fred J. Tydeman

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Sep 18, 2011, 1:10:29 PM9/18/11
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On Sat, 17 Sep 2011 18:51:17 UTC, Steve Wendt <spa...@forgetit.org> wrote:

> After boot, have you toggled the output (Fn-F7, I believe) so that only
> the external monitor is selected as output? There are three modes: a)
> LCD only, b) LCD+VGA, c) VGA only

I have tried that. When there is an image on the external monitor, it is still
just a subset of the full 1920x1080.

> You could also load GACtrl, and try turning off LCD output there. It
> may not stick between reboots though, depending on what the BIOS does.

Doing that changed nothing.
gactrl
5 LCD control
0 CRT only

But, doing
gactrl
5 LCD control
3 Both LCD+CRT
8 Disable expansion to LCD size
caused the letters on the screen to get much smaller.
Back at the desktop, there is now a large black space on the top, right,
bottom, and left of the desktop on the external monitor. I believe that if
those black areas were displayed, I would have the full 1920x1080,
instead of the subset I am seeing.

Trying
gactrl
5 LCD control
0 CRT
8 Disable expansion to LCD size
gets me a black screen once I leave gactrl.

I believe that gactrl is what is run when one does
System setup
Screen
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